%%Created by jPicEdt 1.4.1_03: mixed JPIC-XML/LaTeX format
%%Mon Jan 30 18:46:52 CET 2012
%%Begin JPIC-XML
%<?xml version="1.0" standalone="yes"?>
%<jpic x-min="-4" x-max="50" y-min="0" y-max="22" auto-bounding="true">
%<multicurve fill-style= "none"
%	 points= "(0,0);(0,0);(50,0);(50,0)"
%	 />
%<multicurve fill-style= "none"
%	 points= "(0,20);(0,20);(50,20);(50,20)"
%	 />
%<text text-vert-align= "center-v"
%	 anchor-point= "(-4,20)"
%	 fill-style= "none"
%	 text-frame= "noframe"
%	 text-hor-align= "center-h"
%	 >
%$G$
%</text>
%<text text-vert-align= "center-v"
%	 anchor-point= "(-4,0)"
%	 fill-style= "none"
%	 text-frame= "noframe"
%	 text-hor-align= "center-h"
%	 >
%$\C$
%</text>
%<multicurve fill-style= "none"
%	 points= "(4,0);(4,0);(12,20);(12,20)"
%	 />
%<multicurve fill-style= "none"
%	 points= "(12,20);(12,20);(18,0);(18,0)"
%	 />
%<multicurve fill-style= "none"
%	 points= "(28,0);(28,0);(36,20);(36,20)"
%	 />
%<multicurve fill-style= "none"
%	 points= "(36,20);(36,20);(42,0);(42,0)"
%	 />
%<text text-vert-align= "center-v"
%	 anchor-point= "(2,10)"
%	 fill-style= "none"
%	 text-frame= "noframe"
%	 text-hor-align= "center-h"
%	 >
%$f(i_G)$
%</text>
%<text text-vert-align= "center-v"
%	 anchor-point= "(46,10)"
%	 fill-style= "none"
%	 text-frame= "noframe"
%	 text-hor-align= "center-h"
%	 >
%$f(j_G)$
%</text>
%<text text-vert-align= "center-v"
%	 anchor-point= "(12,22)"
%	 fill-style= "none"
%	 text-frame= "noframe"
%	 text-hor-align= "center-h"
%	 >
%$i_G$
%</text>
%<text text-vert-align= "center-v"
%	 anchor-point= "(36,22)"
%	 fill-style= "none"
%	 text-frame= "noframe"
%	 text-hor-align= "center-h"
%	 >
%$j_G$
%</text>
%</jpic>
%%End JPIC-XML
%LaTeX-picture environment using emulated lines and arcs
%You can rescale the whole picture (to 80% for instance) by using the command \def\JPicScale{0.8}
\ifx\JPicScale\undefined\def\JPicScale{1}\fi
\unitlength \JPicScale mm
\begin{picture}(50,22)(0,0)
\linethickness{0.3mm}
\put(0,0){\line(1,0){50}}
\linethickness{0.3mm}
\put(0,20){\line(1,0){50}}
\put(-4,20){\makebox(0,0)[cc]{$G$}}

\put(-4,0){\makebox(0,0)[cc]{$\C$}}

\linethickness{0.3mm}
\multiput(4,0)(0.12,0.3){67}{\line(0,1){0.3}}
\linethickness{0.3mm}
\multiput(12,20)(0.12,-0.4){50}{\line(0,-1){0.4}}
\linethickness{0.3mm}
\multiput(28,0)(0.12,0.3){67}{\line(0,1){0.3}}
\linethickness{0.3mm}
\multiput(36,20)(0.12,-0.4){50}{\line(0,-1){0.4}}
\put(2,10){\makebox(0,0)[cc]{$f(i_G)$}}

\put(46,10){\makebox(0,0)[cc]{$f(j_G)$}}

\put(12,22){\makebox(0,0)[cc]{$i_G$}}

\put(36,22){\makebox(0,0)[cc]{$j_G$}}

\end{picture}
